That definitely looks like a mod problem.
Did you replaced the 950cor.rim file with another rim file or did you simply drop a 950cor.mod file in you modules folder? If that's the case, then delete the mod file and reload the game from prior entering that module for the first time (you can also try this method to clear the module but it is rather risky as it will clear some local variables: http://www.lucasforums.com/showpost....7&postcount=91
). If that doesn't work, you might have to reinstall.
The issue could also be caused be a mod editing a non unique .utc file for one of the npcs used in that module.